Zobrazeno 1 - 10
of 50
pro vyhledávání: '"N. Makhiyanov"'
Publikováno v:
Herald Of Technological University. 25:64-68
Autor:
M. N. Khasanov, N. Makhiyanov
Publikováno v:
Polymer Science, Series A. 63:220-227
Natural rubber and synthetic polyisoprene rubbers synthesized using titanium-, neodymium-, and gadolinium-containing catalytic systems are studied by DSC, NMR spectroscopy (700 MHz), and GPC. According to DSC thermograms, glass transition parameters,
Autor:
N. Makhiyanov
Publikováno v:
Russian Journal of Applied Chemistry. 94:68-76
Commercial samples of butadiene–styrene copolymers were studied by NMR spectroscopy in a magnetic field of 16.4 T (protons Larmor frequency 700 MHz). A procedure for quantitative determination of the structural composition by 1Н NMR, involving cal
Autor:
N. Makhiyanov, R.R. Davletbaev
Publikováno v:
Kauchuk i Rezina. 79:230-235
Autor:
N. Makhiyanov, O. V. Smetannikov
Publikováno v:
Russian Journal of Applied Chemistry. 92:682-688
Polyisoprenes synthesized on titanium–magnesium catalysts were studied by 1H and 13C NMR spectroscopy (Larmor’s frequency for protons 700 MHz). The problems concerning the accuracy of determining the microstructure of polyisoprenes with high cont
Autor:
N. Makhiyanov
Publikováno v:
Journal of Applied Spectroscopy. 85:1037-1043
Analysis of 13C-satellites was carried out in the 13C NMR spectra of isoprene rubbers with a natural content of 13C carbon isotope. 13C-satellites are the signals caused by the one-bond spin–spin coupling of 13C nuclei. The spin–spin coupling 1J(
Autor:
N. Makhiyanov, R. R. Davletbaev
Publikováno v:
Polymer Science, Series A. 60:117-126
Industrial samples of polybutadiene rubbers with a high (95% or more) content of cis-1,4-units obtained on the neodymium-containing catalysts are studied by GPC and NMR spectroscopy (600 MHz). The GPC data obtained under different experimental condit
Autor:
N. Makhiyanov
Publikováno v:
Polymer Science, Series A. 59:269-279
Production pieces of synthetic isoprene rubbers are studied using the nuclear magnetic resonance spectroscopy method. The measurements are performed by 1Н and 13С NMR spectroscopy with variation of the conditions of sample preparation and taking an
Publikováno v:
Polymer Science Series A. 58:121-129
The quantum-chemical modeling of the local conformational structures of a cis-1,4-polybutadiene macromolecule is performed, and the magnetic shielding constants of 13C nuclei are calculated. The theoretical values of chemical shifts in the 13C NMR sp
Autor:
N. Makhiyanov
Publikováno v:
Polymer Science Series A. 56:241-255
Industrial samples of a copolymer of isobutylene with isoprene (butyl rubber) produced through cationic polymerization via the conventional slurry process (a Lewis acid (AlCl3) as a coinitiator, methyl chloride as a diluent) have been studied with th